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Texas Instruments REF3125AIDBZT — Analog & Data Acquisition

REF3125AIDBZT Voltage Reference, 2.5V Fixed, ±0.2%, SOT-23-3

MPNREF3125AIDBZT
Active

Texas Instruments REF3125AIDBZT, series voltage reference, 2.5V fixed output, ±0.2% tolerance, 20ppm/°C drift, 135µA supply current, SOT-23-3, -40°C to 125°C.

$2.7800Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

REF3125AIDBZT specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeSeries
Voltage - input2.55V ~ 5.5V
Voltage - output (Min (Fixed))2.5V
Output current10 mA
Current - supply135µA
Operating temperature-40°C~125°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.2%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 0.1Hz to 10Hz33µVp-p
Noise - 10Hz to 10kHz48µVrms
Temperature coefficient20ppm/°C

Product details

2.5V fixed reference for precision analog chains

The REF3125AIDBZT from Texas Instruments is a series voltage reference that delivers a fixed 2.5V output with ±0.2% initial accuracy and a 20ppm/°C temperature coefficient. It operates from a 2.55V to 5.5V input supply, drawing only 135µA quiescent current. The low noise floor — 33µVp-p from 0.1Hz to 10Hz and 48µVrms from 10Hz to 10kHz — makes it suitable for driving the reference input of a SAR ADC or a precision DAC without additional filtering.

Housed in a SOT-23-3 package (also referenced as TO-236-3 or SC-59), the REF3125AIDBZT occupies minimal board area.

Listed as Active by the manufacturer.

Frequently asked questions

Is REF3125AIDBZT RoHS compliant?

The part is listed as RoHS compliant per Texas Instruments standard green packaging for the SOT-23-3 package variant.

Can REF3125AIDBZT replace REF3125AIDCKT?

Both share the same 2.5V output, ±0.2% tolerance, and SOT-23-3 footprint. The 'DBZ' suffix indicates Tape & Reel packaging; 'DCK' is a different reel/tape format. Electrically identical — the replacement depends on your pick-and-place reel compatibility, not the silicon.